

There are instances when a corrupted file in the app can cause this problem.
#Avast free antivirus not updating update
Method 2: Repair the Avast app to fix virus definitions update fail error

If you are using Avast for your computer antivirus protection then one of the things you must keep in mind is to regularly check for any new antivirus definitions. Cannot update the virus definitions of Avast

It can detect and remove any malware and other threats making it one of the most highly recommended third party antivirus solutions. It’s available in a free and paid version, both of which can effectively safeguard your data against unauthorized access. To fix this you will need to perform a series of troubleshooting steps.Īvast is a popular antivirus software that’s available for Windows, macOS, iOS, and Android. It’s usually caused by a corrupted data or outdated app version. The Avast virus definitions update failed error usually occurs when trying to update the virus definitions of the desktop version of the app.
